Gear accuracy: JIS B 1702-1 Equivalent to N7 grade Tooth profile: Ordinate teeth Pressure angle: 20° Material: S45C Heat treatment: Induction hardening on the tooth surface Tooth surface hardness: 50-60HRC Surface treatment: Black dye (The fastening parts, teeth and additional working parts are not blackened. ) Number牙齿:55 形状:S1MA 标准圆直径(mm):110 牙齿宽度(mm):20孔直径(mm):28模块:2 牙齿尖端圆形直径:114 牙齿表面饰面:磨牙 螺栓尺寸:M5 x 18 螺栓数:10 灌木直径:50